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From: Dean Rasheed <[email protected]>
To: Yugo Nagata <[email protected]>
Cc: John Naylor <[email protected]>
Cc: Michael Paquier <[email protected]>
Cc: Pgsql Hackers <[email protected]>
Subject: Re: Adjust error message for CREATE STATISTICS to account for expressions
Date: Wed, 1 Apr 2026 17:19:16 +0100
Message-ID: <CAEZATCX+grmuX5g2zohY4z1vviSnYru7u8AgzF=KpfWnOhc-bw@mail.gmail.com> (raw)
In-Reply-To: <[email protected]>
References: <[email protected]>
	<CANWCAZYdyQzCoAiq9kybHT2RcnC1CgrxbCpyxeV3+KZn2xj2UA@mail.gmail.com>
	<[email protected]>
	<CANWCAZYjDSsvC6M6pas26ffbj-TZmXOHHC1-DwRM2LFa+qr3GQ@mail.gmail.com>
	<[email protected]>
	<CANWCAZaZeX0omWNh_ZbD_JVujzYQdRUW8UZOQ4dWh9Sg7OcAow@mail.gmail.com>
	<[email protected]>
	<CAEZATCX2YDkbNZrACOpeLVQKgOhqTdON20XuTqwjWhSaVqbhUQ@mail.gmail.com>
	<[email protected]>
	<CANWCAZaYOdb7p=xndzgDfvJ-0NN_HTyx54LVUX2i1Xs7cPSzbw@mail.gmail.com>
	<[email protected]>

On Tue, 31 Mar 2026 at 15:47, Yugo Nagata <[email protected]> wrote:
>
> Yes, that sounds good to me.
>
> In particular, the following suggestion from Dean Rasheed seems like a
> good approach:
>
> > Error: cannot create extended statistics on a single column
> > Detail: Univariate statistics are already built for each individual
> > table column

I've pushed that change as part of the patch to support extended
statistics on virtual generated columns [1], since I felt that patch
already needed to change that error message.

I didn't look more widely at other error messages in that file might
benefit from having separate errdetail text.

Regards,
Dean

[1] https://www.postgresql.org/message-id/flat/[email protected]





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